<!DOCTYPE html>
<html>

<head>
    <style>
        #one {
            float: left;
            width: 300px;
            height: 200px;
            background-color: yellow;
        }

        #two {
            float: left;
            width: 100px;
            height: 190px;
            background-color: pink;

            margin-left:-100px;
        }
    </style>
</head>

<body>
    <div id="one"></div>
    <div id="two"></div>
</body>

</html>